Fig. 1. Schematic of Nd∶YVO4 slab structure with grazing incident and side pumping

Fig. 2. Setup of single-pass amplification with Nd∶YVO4 slab structure

Fig. 3. Probe beam splitting caused by axicon. (a) Principle diagram; (b) light spot distribution after splitting

Fig. 4. Grazing incidence optical path

Fig. 5. He-Ne laser splitting angle with 0.1 mW and 1 W seed laser extraction

Fig. 6. Comparison of maximum temperature rise of slab measured by axicon model, ANSYS and thermal imager

Fig. 7. Temperature rise of slab pumping surface at different thermal conversion coefficients. (a) Along x direction; (b) along y direction; (c) along z direction

Fig. 8. Variation in single-pass gain of slab with crystal temperature

Fig. 9. Thermal distortion at different pump powers. (a) Horizontal direction; (b) vertical direction

Fig. 10. (a) Single-pass amplified laser output power and ASE power with seed laser power of 0.1 mW; (b) single-pass amplified laser output power and ASE power with seed laser power of 1 W; (c) double-pass amplified laser output power and ASE power with seed laser power of 0.1 mW

Fig. 11. Beam quality and far field spot distribution of amplified laser with seed laser power of 0.1 mW